HS

Hirotetsu Sonoda

BC Bosch Braking Systems Co.: 4 patents #10 of 58Top 20%
JC Jidosha Kiki Co.: 4 patents #52 of 196Top 30%
UC Unisia Jkc Steering Systems Co.: 1 patents #5 of 19Top 30%
Overall (All Time): #586,834 of 4,157,543Top 15%
9
Patents All Time

Issued Patents All Time

Showing 1–9 of 9 patents

Patent #TitleCo-InventorsDate
6779625 Steering damper Tatsuya Harada 2004-08-24
6415885 Steering damper 2002-07-09
6267040 Power steering device Tatsuya Fukushima 2001-07-31
6216813 Rack-pinion type power steering apparatus Seiichi Kojima, Tatsuya Fukushima 2001-04-17
6206574 Ball bearing and method of assembling the same Tatsuya Fukushima 2001-03-27
6021685 Rack-pinion type power steering apparatus Tatsuya Fukushima 2000-02-08
4793433 Hydraulic reaction force apparatus for power steering system Yasuyoshi Emori 1988-12-27
4587886 Power steering device Naosuke Masuda 1986-05-13
4579040 Power steering device Naosuka Masuda 1986-04-01